Zonal Railways:
- Central Railway
- Western Railway
- West Central Railway
- Northern Railways
- North Central Railway
- North Western Railway
- North Eastern Railways
- North East Frontier Railways
- Eastern Railway
- Southern Railway
- South Central Railways
- South Eastern Railway
- South Western Railway
- South East Central Railway
- East Central Railway
- East Coast Railway
Production Units:
- Chittaranjan Locomotive Works
- Rail Coach Factory
- Integral Coach Factory
- Diesel Component Works
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National Thermal Power Corporation
- All Units
State Electricity Board:
- U.P Rajya Vidyut Utpadan Nigam Ltd.
- Maharashtra state Power Generation Co. Ltd.
- West Bengal Power Development Co. Ltd.
- Bihar State Electricity Board.
- Haryana Power Generation Corpn Ltd
- Rajasthan Power Generation Corpn Ltd
- Jharkhand state Electricity Board
- Andhra Pradesh Power Generation Corpn Ltd
- Vijaywada Thermal Power Station
- Orissa Power Generation Corpn Ltd.
Other Power Generation Companies:
- Tata Power Ltd
- Indraprastha Power Generation Corpn Ltd
- Damodar Valley Corporation
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Steel Authority of India Ltd.:
- Bokaro Steel Plant
- Bhilai Steel Plant
- Alloy Steel Plant
- Durgapur Steel Plant
- Rourkela Steel Plant
- Salem Steel Plant
Other Steel Plants:
- Bhushan Steels & Strips Ltd.
- Bhushan Power & Steel Ltd.
- Ispat Industries
- Steelco Gujarat
- Pennar Industries Ltd.
- Uttam Steels Ltd.
- Essar Steel Ltd.
- Rathi Udyog
- Monnet Ispat
- Karnataka Strips Ltd.
- Hero Cycles Ltd.
- Tinplate Co of India Ltd.
- Tata Bearings Ltd.
- Jindal Stainless Steel Ltd
- Jindal Steel Power Ltd
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- Flat Products Ltd.
- Mecon Ltd
Heavy Industries:
- Bharat Heavy Electricals Ltd.
- Bharat Earth Movers Ltd
- Heavy Engineering Corpn Ltd
- National Aluminium Co Ltd.
- Bharat Aluminium Co Ltd.
- Sriram Fertilisers & Chemicals.
- National Fertilisers Ltd.
- Rajasthan State Mines & Minerals Ltd.
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- Airport Authority of India
- Essar Constructions Ltd.
- Central Mine Planning & Design Institute Ltd.
- MEML
- Bharat Heavy Electricals Ltd.
- BHARAT PETROLEUM LTD.
- KOCHI REFINERIES LTD.
- Oil & Natural Gas Corporation
- GEB UTTRAN GAS POWER STATION
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